Патент USA US2109258код для вставки
Feb. 22, 1938. e. SLAYTER ' ‘2,109,258 f SEALING APPARATUS Original Filed March so, 1933 _ '4 Sheets-Sheet 1 Z2 30 15-1- I gwumto/o Feb. 22, 1938. G. YSLAYTER ' 2,109,258 _ SEALING APPARATUS ‘Original File‘d March-so, 1933 ' 4 sheets-sheet s _ . 2'1 74 ' ‘ //////‘// /// ////////////%vja “ / TIE-74 10 54)"! Z, Z?‘ Jay Feb. 22', 1938.- ‘ _ GASLAYTIER I ~2,1(.)'9,258 - SEALING APPARATUS Originai Filed March so, 1935 ‘ 4 Sheets—$heet 4 / //// // /// / ///// ,/,///,//,/,///// Z1 77 Patented Feb. 22, 1938 2,109,258 UNITED STATES. ' PATENT OFFICE 2,109,258 SEALING APPARATUS Games Slayter, Newark, Ohio, assignor to Owens Illinois Glass Company, a corporation of Ohio Application March '30, 1933, Serial No. 663,667 Renewed November 9, 1936 ,. 5 Claims. My invention relates to apparatus adapted for attaching parts together with an adhesive ap plied in a liquid or semi?uid state to the surfaces ' which are to be united. In the form of the in ‘Referring to the drawings, and as shown in ' Fig. 1, the mechanism for applying the sealing material to the hollow articles is mounted on a table I!) and includes a tank or container l2 for vention herein illustrated, the apparatus is the bath of sealing liquid. To the right of the adapted for use in sealing a glass cover plate or tank i2 is apparatus for use in uniting the hollow block and its cover plate after a coat of the seal lid in the open side of a hollow glass block to pro vide a hermetically sealed hollow block. An object of the invention is to provide a simple 10 (Cl. 226—82) and practical sealing mechanism by which the sealing operation may be quickly performed with facility, neatness, accuracy and reliability, and ing material has been applied. ' The mechanism for applying the sealing com pound to the hollow blocks will first be described. Referring to Figs. 3 and4, a vertical post I I ?xed to the table, provides a support and guide for the tank l2 in which is a bath I3 of the sealing liq without waste of the sealing material. More par ticularly, the invention provides an apparatus ~_ uid. The tank is movable up and down on the including means for maintaining a bath of the post,_as more fully set forth hereinafter. The sealing material at a suitable temperature for tank is jacketed with an outer case I4 spaced application to the hollow block or article, means ‘therefrom to provide a chamber l5v enveloping for applying to the edge of the article which is the bottom and side walls of the tank. Within to be sealed, a uniform layer or coating of the sealing material, means for supplying hot, dry air to the interior of the article before sealing, and means to facilitate the uniting of the hollow article and cover plate after the sealing material has been applied. constant temperature su?iciently high to keep the bath of sealing compound l3 in a liquid or semi?uid condition and at the proper temperature for .the sealing operations. A platform I‘! is Other objects of the invention will appear here inafter. mounted on the tank I2 and provides a cover for the chamber I5. Sealing material IB makes a Referring to the accompanying drawings. which illustrate apparatus constructed in accordance 'with the principles of my invention: tight connection. between the platform I‘! and the parts l2 and M. The tank I2 with the platform I‘! thereon, is Fig. 1 is a part sectional elevation of the appa ratus. Fig. 2 is a part sectional elevation of the air drying and heating mechanism. ' Fig. 3 is asectional. elevation showing an appa ratus for applying the sealingecompound, and a hollow block positioned thereon. Fig. 4 is a view similar to Fig. 3, but with the platform. and hollow block thereon depressed for applying the sealing material. _ ' ' .-Fig. 5 is a fragmentary top plan view, partly ‘in section, of mechanism shown in Figs. 3 and 4. Fig. 6 is va sectional elevation at the line VI—VI_ on Fig. 1, showing apparatus used in» uniting the hollow/‘ lock and cover plate. Fig. R7 is a fragmentary sectional view of such apparatus with the hollow block moved down ward into sealing engagement with the, cover plate. . Fig. 8 is a view similar to Fig. 4, showing a modi?ed construction. Fig. 9 is a section at the line IX-IX on Fig. 8. Fig. 10 _is a view similar to Fig. 1, showing a modi?cation of the means for supporting the hollow block and cover'plate during the sealing ' the chamber I5 is a heating medium such as glycerin or other liquid which is maintained at a operation. guided in its up and down movements by a hollow : shaft or sleeve l9 ?xed to the tank and mounted to slide up and down on the post ll. ‘Said sleeve extends through openings in'the bottoms of the tank l2 and the jacket l4 and is formed with a flange 20 at its lower end engaging beneath the :. case M, thereby supporting the tank and parts carried therewith. A hol ow block 2|, to which a cover plate is to be sealed, is placed in an inverted position on the platform 'I 7 and held against lateral displacement ll) by means-of guide posts ,22 mounted on the plat form. The block 2| may be formed, as shown, with a recess extending along its inner marginal _ surface top-rovide a sealing surface 23, said recess being adapted to receive the cover plate 24 (see » Fig. 7). - Y The means for transferring a coating of the sealing material from the bath l3 to the surface 23 includes a stationary transfer plate 25 which, as shown, is made of comparatively thin sheet metal and is mounted on a supporting plate 26. The latter is formed with a hub or sleeve 21 which surrounds the sleeve Ill. The post II is formed at its upper end with an extension 28 of reduced diameter which extends through an opening in a 2 2,109,258 cap 29 threaded onto the upper end of the hub 21. A locking nut 30 clamps the cap 29 in posi tion on the post | I. Overlying the transfer plate 25 is a clamping frame 3|. Screw bolts 32 clamp the frame 3| and plates 25 and 26 together. A key 33 (Figs. 4 and 5) secured to the sleeve I9 is slidable vertically in a groove 34 formed in the hub 21, thereby preventing rotation of the con-v tainer l2 and connected parts during their up ind 10. down movement. Extending along the outer margin of the transfer. plate 25 is a coil spring 35 (Fig. 5) threaded through a series of perfor ations 36 formed in the plate. The coil spring provides an applicator for transferring the seal 15 ing compound from the bath and applying it to the sealing surface 23 of the hollow block. The tank l2 containing the bath of sealing material is normally held in its elevated posi tion by means of a coil spring 45 so that the transfer plate with its applicator 35 is immersed in the sealing material. When downward pres sure is applied to the block 2|, the block and tank are lowered so that the transfer plate 25 enters the block, bringing the applicator 35 into contact with the surface 23 and thereby apply ing a coating of the‘ sealing material to said surface. The platform I1 is formed with an opening 46 to permit the passage of the trans fer plate therethrough. The bath l3 of sealing material is heated to the required temperature by a heating element 31 mounted within the heating chamber l5. The heating element may consist of a standard im mersion heater which includes a heating coil within a metal casing, but insulated therefrom. The coil is heated by an electric current supplied from the mains 38 and 39.v One terminal of the coil is connected through a conductor 40 to the main 38. The other terminal is connected through a conductor 4| to one terminal of a thermostat 42 mounted in the casing l4 and im mersed in the heating liquid, the other terminal of‘ the thermostat being connected to the min 39. The thermostat includes an automatic switch 43 which operates in a well known manner to maintain the heating liquid l3 at a substan tially constant temperature. That is, if the tem perature falls below a predetermined degree, the‘ switch is automatically closed so that the heat ing element 31 receives current and raises the temperature, causing theswitch 43 to open when the desired temperature is reached. The sealing bath I3 is thus maintained at the desired tem perature. 55 ~ . The sealing compound when intended for use in sealing glass blocks, as herein set forth, may consist of a mixture of 90% resin and 10% castor oil. This provides a transparent cement which is su?iciently liquid at a moderately high temperature, for example, 150° to 160° F. to be easily applied and at the same time possesses suf-' ?cient body to insure a complete seal. More over, such a cement quickly cools and hardens sufficiently to provide a permanent and reliable seal. While the hollow block and cover plate are being secured together, the latter is supported on a stationary platform 50 which is formed with an integral bracket 5| for attachment to the table ID as by means of bolts 52 (Fig. 6). The supporting surface of the platform 5|) is sub stantially co-extensive laterally with the cover plate 24 which is supported thereon, the plat form being preferably somewhat lower than the table so that the plate 24 is supported with its upper face on a ‘:evel with or just below the sur face of the table Ill. Surrounding the platform 50 is a supporting frame or platform 53 which provides a support for the hollow block 2|. The table “I is provided with an opening 54 to re ceive the frame 53 which is normally held at about the level of the table. Coil springs 55 are interposed between- the platform 53 and brackets 56 secured to the lower surface of the table. The springs hold the platform normal 10~ ly in its uppermost position but permit it to move downward under pressure. The springs 55 are mounted on posts51 attached to and ex tending downward from the platform 53. The heads of said posts provide stops to limit the v15 upward movement of the platform. Spring clips - or stops 58 are mounted on the platform 53 in position to engage the sides and one end of the'block 2| when the latter is placed on the platform 53 and thus hold the block centered 20 over the platform 53 and the plate 24 thereon. Means for supplying hot, dry air to the interior of the block 2| prior to the sealing operation, comprises the apparatus shown in Fig. 2. This includes an air compressor 59 which maybe of 25 conventional construction. a storage tank 50 for the compressed air, a drier including a drum 6|, and a heater 62. The drier drum GUI .con tains a suitable drying material 63 such as cal cium chloride which serves to extract the mois ture from the air passing therethrough. The air under pressure is conducted from the tank 83 through a pipe “and enters a compartment 65 in the bottom of the drum SI, and passes up ward through a perforated false bottom or screen 65 into the compartment containing the drying material 63. The dry air passes from the drier through a- pipe 61 to a heating coil 68. A gas burner 69 maintains the coil “hat a high tem perature, so that the air through the coil is heated to a high degree. The hot air is conducted from the coil through a pipe 18 to a nozzle ‘H which extends upward into or through‘ an opening 12 in the table II, said opening be ing preferably located adjacent the platform 53. 45 A valve 13 in the, pipe ‘I0 serves as a throttle valve to regulate the ?ow of hot air and may also be used for shutting off the?ow of air. The operation may be described as follows: A hollow block 2| is placed open side down on 50 the platform I‘! and held against lateral dis placement by the guide pins 22 attached to the platform. Downward pressure is then applied‘ to the block, thereby lowering it, together with the tank, to the Fig. 4 position, compressing the 55 spring 45. The bath. |3 of sealing compound is thus lowered away from the transfer plate 25, leaving a coating of the compound on the plate and the coil spring or applicator 35. By the downward movement of the hollow block 2|, the applicator 35 is brought into the marginal re cess of the block and thereby applies a coating or ?lm 46I of the sealing material to the sur faces of said recess. ' The pressure is now re moved from the block 2|, permitting the tank and parts carried thereby to be lifted by the spring 45 back to the Fig. 3 position. The block 2|‘ is then lifted from the platform I‘! and placed on the table l0 over the ‘nozzle 70 1| so that the hot, dry air ?owing from the noz zle quickly ?lls the vblock and also warms the block to a certain extent. The block is now slid to the right, to the full line position (Fig. 1) in which it is supported on the platform 53, the 75 3 2,109,268 spring clips 58 serving to arrest and hold the block centered on the platform. ’ Downward pressure is now applied to the block 2|, thereby lowering the platform and block and bringing the block into sealing engagement with the lid or cover plate 24 which has been placed on the platform 50. This downward pressure may be effected either by hand or by means of a power operated press head H which is brought 10 down on the block and applies the required pres sure to complete the sealing operation. ' The sealing material 46“ has sufficient body and is su?iciently viscous to. insure a perfect seal between the block and the lid 24.‘ The sealing material quickly cools when brought in contact with the comparatively cold lid 24 and is thus hardened sufficiently to provide a permanent seal. The hot air within the block also quickly cools with a consequent reduction of pressure, thereby '20 causing a partial vacuum within the block. At the same time the temperature of the block itself is lowered, causing a moderate contraction-which applies pressure to the sealing medium ‘and thus tends to“ increase the effectiveness and perma 25 nency of the seal. ' In the modi?cation shown in Fig. 8, the seal ing material is transferred from the bath to the hollow block by means of a transfer plate 15 hav ' ing a ?xed mounting on the post. i I. The means for attaching the plate 15 to the post comprises an auxiliary plate or yoke 16 mounted on the upper reduced end of the post II and connected to the plate 15 by bolts 11. Collars 18 are mount ‘ ed on the bolts 'I'l between the plates 16 and ‘I5 35 for spacing, said plates apart. The plate 15 .carries an applicator 19 in the form of a mar ginal strip of felt wool or other suitable material support for a cover plate or lid,.a platform sur rounding said support, and springs holding the platform at about the level of the table and permitting downward movement of the platform under pressure, the platform being adapted to 5 hold a hollow article, open side downward, over a. cover plate on said stationary support and permitting said article and platform to be moved downward under pressure into sealing engage _ ment with the cover plate. = , 10 2. The combination of a table having an open ing therein, a stationary supporting plate,‘ an open platform mounted in said opening in the table and surrounding said plate, said platform being movable downward relative to the table, 15 and spring means for normally holding the plat form at about the level-of said table. 3. The combination of a table having an open ing therein, a stationary supporting plate, an open platform mounted in said opening in the 20 table and surrounding said plate,.said platform being movable downward relative to the table, spring means for normally holding the platform at about the level of said table, and spring clips . mounted on said platform in position to hold a 25 hollow article in alignment with said stationary support. _. . - 4. Apparatus for sealing a cover plate to the open side of a hollow article, comprising a table on which the article is supported with its open 30 side downward, means for supporting the cover plate with its upper face at no time higher than the plane-of the table, means for directing a gas into said article while supported in said posi tion on the table adjacent the cover plate, the 35 parts being arranged to permit the article to be _moved.laterally to a position directly over. the ‘for transferring a coat of the sealing material cover ‘plate while the table and cover plate main from the bath l3 to the sealing surface of the tain the article substantially closed, and means which relative movement of said article and 40 '40 hollow block. A metalbinding strip 80 (Fig. 9) ' by serves to secure the applicator 19 in position cover plate may be ‘effected to bring said plate on the plate 15. When the tank I! is in its into sealing engagement with the article. 5. In apparatus for sealing a cover plate to normal elevated position, the transfer plate 15 and the applicator ‘l9 thereon are immersed in 45 the sealing liquid l3. _ ‘ In Fig. 10, I have shown a modi?cation of the 'means for supporting the hollow block and cover plate during the sealing process. In this instance, the cover plate is supported directly on the table 50 In. The yieldable platform for the hollow block is also omitted, the block being placed directly ' on the cover plate, the spring clips 58 serving to guide and hold thevblock in position. Modifications may be resorted to within the 55 spirit and scope of my invention. What I claim is: ' I a hollow article, the combination of a table having an opening therein, means for supporting 45 the cover plate within said opening with the‘ upper surface of said plate at no time higher than the level of the table, means for directing a heated gas upwardly into the hollow article whilethe latter is supported on the table with 50 its open side downward, said article being mov able laterally i’rom said gas receiving position to a position directly over the cover plate, and means for directing the cover plate into sealing engagement with said article. ~ ~ ' 1. The combination of a table,‘ a stationary GAMES 'smr'ma.